WO2013141828A1

WO2013141828A1 - Vessel for transporting compressed gas

Info

Publication number: WO2013141828A1
Application number: PCT/UA2012/000112
Authority: WO
Inventors: Эль-Саид Хассан АХМЕД МИАВАД; Абдул Карим ХАМДО; Валерий Николаевич МОРОЗОВ; Алексей Григорьевич ШУСТИК
Original assignee: Akhmed Miavad El-Said Khassan; Hamdo Abdul Karim; Morozov Valeriy; Shustyk Oleksiy
Priority date: 2012-03-19
Filing date: 2012-12-14
Publication date: 2013-09-26
Also published as: RU2014141807A; CN104379440A; EP2829467A4; EP2829467B1; CN104379440B; RU2589811C2; EP2829467A1; UA101584C2

Abstract

A vessel for transporting compressed gas comprising cargo holds with tanks for storing gas during transportation arranged in said cargo holds is equipped with pipelines, signalling sensors, a shutoff fitting and a connecting fitting, and compressors, wherein the hull of the vessel is divided into compartments with vertical guides, at least one partition in said compartments is impermeable to water and gas, and unified containers with the tanks for compressed gas arranged horizontally therein are mounted one on top of the other in the guides, said containers being connected to a vessel system for compressed gas transfer, wherein the hull of the vessel is divided into the compartments in such a way that, in the zone of at least one partition delimiting the compartment, a distance of from 0.8 to 2 metres is ensured, and collectors for distributing the compressed gas, the pipelines with the shutoff valves, the compressor and accident monitoring and control equipment are arranged in this space.

Description

B63B25 / 14; B63B27 / 34; F17C1 / 00; F17C5 / 06

Compressed gas ship

The invention relates to the design of ships, their equipment and systems for transporting compressed gas from fields to specified points.

A ship for transporting compressed gas is described in the patent.

Russian Federation N ° 2299151, published May 20, 2007, MPK indices V63V25 / 14, F17C1 / 00, F17C5 / 06, according to which a vessel for transporting compressed gas includes a ship gas pipeline with means of communication with a coastal or marine terminal, a pressure source, a heat exchanger and sealed containers for storing gas, each of which contains gas tanks made in the form of a high pressure cylinder, moreover, sealed containers for storing gas are made in the form of sealed ship compartments, and the cavity of the high pressure cylinders section on an elastic partition made of stretchable material, hermetically attached to the walls of the cylinder along the perimeter of its cross section, while the cylinders on one side of the elastic partition are equipped with a pipeline with a valve system for communicating the cavity of the cylinders from the specified side from the elastic partition with each other and with the ship’s gas pipeline, and, on the other hand, from the elastic partition, by a pipeline with a valve system for communicating the cavity of the cylinders, on the other hand, from the elastic partition between each other and with regular enrollment pressure formed as a compressed air source, wherein the cavity ship sealed compartments for storage of high pressure compressed gas cylinders through conduits communicated between a valve system with the ship and the gas conduit. A ship for transporting compressed gas, which includes a cold source connected by a pipeline through a valve system and a heat exchanger with the cavity of the ship’s sealed compartments.

The disadvantages of the design of the known vessel is that the vessels for compressed gas are bulky, which does not allow to unload the containers and deliver them to the consumer in the conditions of the ports, therefore it is only possible to reload gas through the pipeline to port external gas storages and consumers need main pipelines to the specified gas place on land or inject compressed gas or liquefied gas in containers for transportation by other means of transport. The fact that the containers are large in size does not allow transporting gas under a pressure of more than 100 kg / cm ² , which leads to a limitation of the amount of gas transported by the vessel and the need for constant cooling of the containers to maintain gas parameters close to the critical state of the gas.

A ship for transporting compressed gas is described in the patent.

Russian Federation N ° 2300480 published on 06/10/2007 in bull. N2I6, IPC index B63B25 / 14, F17C1 / 00, F17C5 / 06, according to which the ship for

transportation of compressed gas includes the main ship gas pipeline with means for connecting to the pipeline onshore or offshore terminal, pressurized compartments for storing compressed gas, each of which contains a gas tank made in the form of a packet of pipes located at an angle to the horizon and connected to the ascending end of the pipe a common collector for injecting and pumping out compressed gas, and from the downstream end of the pipes, a common collector for accumulating condensate formed in the pipes during transportation about gas, and a tank for collecting accumulated gas condensate, while the cavities of the ship’s sealed compartments are connected by pipelines through the valve system, the compressor and the heat exchanger to the cold source that the vessel is equipped with, and the collectors of the same name gas tanks and ship’s sealed compartments are interconnected respectively through the valve system through appropriate pipelines, moreover, the pipeline of pressurized compartments and the pipeline of manifolds for injection and pumping of compressed gas connected through a valve system to the main ship gas

the pipeline, and the pipeline of the condensate accumulation collectors is configured to connect to the accumulated condensate collection tank.

The vessel is equipped with a pump for pumping the condensate accumulated in the collectors into the condensate collection tank. Moreover, the tank for collecting accumulated condensate from the collectors can be located both on the vessel itself and on the coastal or marine terminal.

A ship for transporting compressed gas, including the main ship’s gas pipeline with means for connecting to the pipeline of an onshore or offshore terminal, hermetic compartments for storing compressed gas, in each of which there is a gas reservoir made in the form of a packet of pipes,

composed of pipes of various diameters, located at an angle to the horizon and connected at both ends by common collectors, with collectors for pumping and pumping out compressed gas located on the upstream end of the pipes, and collectors for accumulation on the downstream end of the pipes

condensate formed in the pipes during transportation of compressed gas, and a tank for collecting accumulated gas condensate, while in the packets of pipes of a smaller diameter are placed in voids formed between pipes of a larger diameter, as well as between pipes of a larger diameter and the walls of the pressurized compartment, the cavity of the ship’s pressurized compartments connected by pipelines through a valve system, a compressor and a heat exchanger with a source of cold, which is equipped with the vessel, and the same collectors of pipes of gas tanks and ship are tight compartments respectively interconnected with one another through a system of valves by means of corresponding pipelines, wherein

the pipeline of pressurized compartments and the pipelines of the manifolds for injecting and pumping out compressed gas are connected through a valve system to the main ship gas pipeline, and the pipeline for the condensate accumulation collectors is configured to connect to the accumulated condensate collection tank.

The vessel is equipped with a pump for pumping the condensate accumulated in the collectors into the condensate collection tank. The tank for collecting accumulated condensate from collectors can be located both on the vessel itself and on the coastal or marine terminal. The disadvantages of the design of this vessel is that the vessels for compressed gas are bulky, steel, designed to be assembled inside the vessel’s hold, which does not allow unloading containers and delivering them to the consumer in conditions of ports, therefore, only gas can be reloaded through the pipeline to port external gas storages and for further gas movements are needed either main pipelines to a given place on land or to inject compressed gas or liquefied in containers for transportation by other means of transport the mouth. The fact that the containers have a non-optimal shape and large dimensions does not allow the transportation of gas under a pressure of more than 100 kg / cm ² , which leads to a limitation of the amount of gas transported by the vessel.

The closest, in fact, is the ship system for transporting compressed gas described in the patent of the Russian Federation N ° 2145689,

published on 02.20.2000, IPC index: B63B25 / 14, F17C1 / 00, F17C5 / 06, according to which, the system for transporting compressed gas contains a vessel, compartments for storing compressed gas, which are made and arranged with the possibility of transportation by the vessel and each of which contains interconnected gas reservoirs, a high pressure pipeline including means configured to connect to an onshore terminal, a low pressure pipeline including means configured to connect to an onshore terminal, means the flow connection of each compartment for storing compressed gas to each of the pipelines of high and low pressure, and valves for selectively controlling the flow of compressed gas between each compartment for storing compressed gas and each of the pipelines of high and low pressure, each compartment for storing compressed gas from

the possibility of selective flow connection to each of

high and low pressure pipelines.

The vessel contains cargo holds in which gas tanks are vertically located. The system includes a substantially sealed hatch for each cargo hold and means for supplying inert gas to each cargo hold, with each cargo hold being configured to fill with an inert medium from said inert gas. Moreover, cargo holds and sealed hatch covers are thermally insulated.

The system additionally includes in each cargo hold equipment for detecting gas leaks and means for releasing compressed gas from the leaking compartment for storing gas into the atmosphere. The system, in addition to means for discharging compressed gas into the atmosphere from a leaking gas storage compartment, includes a flare unit.

The system includes onshore equipment containing a compressor.

The system further comprising an onshore terminal for receiving compressed gas from the vessel, comprising a cryogenic installation for converting a portion of the compressed gas received from the vessel into liquefied gas.

The system further includes a coastal terminal for receiving compressed gas supplied from the ship’s high pressure pipeline and from the ship’s low pressure pipeline to supply said compressed gas to the gas transmission pipeline, the coastal terminal including an unloading compressor for compressing gas obtained from the low pressure pipeline before by feeding it from a low pressure pipeline to a gas transmission pipeline. Moreover, the high-pressure pipeline, the low-pressure pipeline and the unloading compressor are designed and implemented to ensure essentially complete unloading of the vessel within about 8 hours

A system in which each gas reservoir may contain compressed gas under a pressure of from about 70.3 kg / cm ² (1000 psi) to about 351.6 kg / cm ² (5000 psi).

A system in which each compartment for storing compressed gas includes at least 3 and no more than 30 gas tanks.

A system in which gas tanks are made of welded mild steel pipes with domed lids welded at both ends.

A system in which said gas is natural gas.

The method of filling the ship’s storage system with compressed gas from onshore equipment located at the loading point and made with

the possibility of supplying the ship with compressed gas from the supply pipe at a first pressure corresponding essentially to the pressure in the supply pipe, and at a second pressure exceeding the first, including a low pressure pipeline configured to receive gas from onshore equipment at a first pressure, a high pressure pipeline configured to receive gas from onshore equipment at a second pressure, and gas storage compartments, each of which contains interconnected gas reservoirs, including:

(a) attaching one gas storage compartment to a low pressure pipe,

(b) holding a portion of the compressed gas under a first pressure through a low pressure pipe to partially fill said one gas storage compartment substantially at a first pressure,

(c) isolating said single gas storage compartment from a low pressure pipeline,

(d) connecting said single gas storage compartment to a high pressure pipe,

(e) holding a portion of the compressed gas at a second pressure through a high pressure pipe to said first gas storage compartment to fill it substantially at a second pressure,

(f) attaching another gas storage compartment to the low pressure pipe; and (q) repeating said steps until substantially all gas storage compartments are filled with compressed gas at substantially second pressure.

A method of unloading compressed gas from a ship’s storage system to onshore equipment located at the discharge point, which is configured to further supply this compressed gas to a gas pipeline located behind it under pressure from this pipeline and includes means

decompression to reduce the pressure in the compressed gas received from the vessel, before it is supplied to the specified gas pipeline and a compressor to compress the compressed gas received from the vessel, before it is supplied to the specified gas pipeline, including a high pressure pipeline, configured to supply gas to the means decompression, low pressure pipe,

made with the possibility of supplying gas to the compressor, and gas storage compartments, each of which contains interconnected gas reservoirs containing compressed gas under pressure from the ship system, which is essentially exceeds the pressure in the specified gas pipeline, including:

(a) attaching one gas storage compartment to a high pressure pipe,

(b) unloading part of the compressed gas from said single gas storage compartment through a high pressure pipeline to decompression means,

(c) isolating said single gas storage compartment from a high pressure pipeline,

(d) connecting said single gas storage compartment to a low pressure pipe,

(e) conducting a portion of the compressed gas from said one gas storage compartment through a low pressure pipeline to a compressor,

(f) attaching another gas storage compartment to the high pressure pipe; and

(q) repeating said steps until substantially all of the gas storage compartments are discharged from a portion of the compressed gas contained therein through each of

high and low pressure pipelines. Moreover, they provide the possibility of adiabatic expansion of the compressed gas in the process of unloading the vessel, in which the adiabatic expansion of the compressed gas is used to cool the gas tanks and keep these tanks in a cooled state until the next filling of the compressed gas.

Onshore equipment also uses an additional compressor to convert part of the compressed gas into liquefied gas and storage means for storing the specified liquefied gas, and also directs part of the compressed gas supplied from the high pressure pipeline to drive the additional compressor, moreover, as compressed gas natural gas is used, and liquefied natural gas is used as liquefied gas.

Common essential features is that the ship for transporting compressed gas includes cargo holds with containers for storing gas during transportation, is equipped with pipelines, alarm sensors, shutoff and connecting fittings, compressors. The disadvantages of the design of this vessel is that the vessels for compressed gas are large-sized structures designed for vertical storage, which does not allow unloading of containers in the conditions of ports and delivering them to the consumer, therefore, only gas overloading through

pipelines to external port gas storages and for further gas movement, either main pipelines to a specified place on land are needed, or compressed gas or liquefied gas are pumped into containers for transportation by other means of transport. The aim of the invention is the creation of a vessel design for transporting compressed gas, which allows not only to receive, control, reload and unload gas through ship piping systems, but also to load and unload at container terminals, with the provision of container transportation of gas to designated places by small-sitting vessels on rivers, and also by road or rail, without additional technological operations and additional energy costs at ambient temperature. Simplify repair or replacement of gas tanks.

Possibility of quick technologically simple conversion of cellular container vessels to vessels for transporting compressed gas.

The salient features are that the ship’s hull is divided into cells with vertical guides, at least one bulkhead is water-tight, in the guides there are unified containers with horizontally arranged containers for compressed gas, which are connected to the ship’s compressed overload system gas, and the hull of the vessel is divided into cells so that in the area of at least one bulkhead restricting the cell, a distance of 0.8 to 2 meters is provided in this space There are no compressed gas distribution manifolds, pipelines with shut-off valves, a compressor, emergency monitoring and control devices.

Each double cell is closed by a common hatch with a completely impermeable closure and is separated by water-tight bulkheads from other pairs of cells. Moreover, at least one container with an empty drainage tank is installed in each double cell, with the possibility of discharge of condensate or excess gas into cargo tanks, and the drainage tanks are connected through safety valves and pipelines brought to the upper deck to

5 gas combustion device.

Each tank is connected through a shut-off valve to the manifold by a flexible pipeline or through a bellows compensator, and the collector is located between the ends of the containers of the parts of the double cell and connected by a pipeline through the shut-off valves and safety equipment to the compressor and from

10 collectors of each double cell, the pipeline is brought to the upper deck and has connecting fittings with the ability to connect to

the pipeline of the external gas storage and the fittings of the connection with another double cell.

The compressor connection system provides for piping with 15 shut-off valves, with the possibility of gravity transfer of gas under pressure.

The containers are interconnected by rotary container stops or centering cones and ties.

In containers horizontally arranged cylindrical containers made of composite materials, on each of which at least one 20 connecting fitting, a shut-off valve, a safety valve, a pressure and temperature sensor are installed, as well as a condensate sensor, a condensate drain fitting, are installed. In each tank, the output fitting is made from two ends.

The containers are standard marine 40-foot containers with external dimensions: length 12192 mm, width 2438 mm and height 25 2591mm.

Each cell individually or a group of cells are closed on top

waterproof hatch closure.

Each cell or group of cells is closed on top with removable sewing on the opening in the deck.

30 Fittings, shut-off valves and pipelines for exiting manifolds to

connecting fittings are covered with coolant shirts. Distinctive essential features valid in all cases is that the hull is divided into cells with vertical

guides, at least one bulkhead in which is water and gas tight, in the rails there are unified containers with horizontal containers for compressed gas placed in them, which are connected to the ship’s compressed gas reloading system, and the hull is divided into cells so that in the zone, at least one bulkhead bounding the cell, a distance of 0.8 to 2 meters is provided, and compressed gas distribution manifolds, pipelines with shut-off valves, a compressor, Emergency monitoring and management.

Distinctive essential features valid in some cases is that each double cell is closed with a general water-tight hatch and is separated by water-tight bulkheads from other pairs of cells.

Moreover, at least one container with an empty drainage tank is installed in each double cell, with the possibility of discharge of condensate or excess gas into cargo tanks, the drainage tanks connected via safety valves and pipelines to the upper deck to the gas burning device.

Each tank is connected through a shut-off valve to the manifold by a flexible pipeline or through a bellows compensator, and the collector is located between the ends of the containers of the double cell parts and connected by a pipeline through the shut-off valves and safety equipment to the compressor and the pipeline from the collector of each double cell, is brought to the upper deck and has a connecting fittings with the ability to connect an external gas storage to the pipeline; and fittings for connecting to another double cell.

The compressor connection system provides for piping with shut-off valves, with the possibility of the transfer of gas under pressure by gravity. The containers are interconnected by rotary container stops or centering cones and ties.

In containers horizontally arranged cylindrical containers of composite materials, each of which has at least one connecting fitting, a shut-off valve, a safety valve, a pressure and temperature sensor, as well as a condensate sensor, a condensate drain fitting. In each tank, the output fitting is made from two ends. The containers are standard marine 40-foot containers with external dimensions: length 12192 mm, width 2438 mm and height 2591 mm,

Each cell individually or a group of cells are closed on top

waterproof hatch closure.

The fittings, shut-off valves and pipelines for exiting the manifolds to the connecting fittings are covered by shirts with a coolant.

The fact that the hull of a heavy vessel with a deadweight of more than 10,000 tons is divided into cells with vertical guides, at least one bulkhead in which is water and gas tight, unified containers with horizontally arranged containers for compressed gas are mounted on top of each other, allows you to create a ship structure for transporting compressed gas, which allows not only to receive, control and unload gas through ship pipeline systems, but also to load and unload at container terminals x, with the provision of containerized transportation of gas to designated places by small-sitting vessels along rivers, as well as by road or rail, without additional technological operations and additional energy costs at ambient temperature, and also to simplify the repair or replacement of gas tanks, even in port conditions.

The fact that the tanks are connected to the ship’s system for transferring compressed gas and the hull of the vessel is divided into cells so that between at least one pair

a bulkhead bounding the cell, a distance of 0.8 to 2 meters is provided, and compressed gas distribution manifolds, pipelines with shut-off valves, a compressor, emergency monitoring and control devices are located in this space, and this has made it possible to reduce the length of pipelines and the safety of work. This design allows the technologically simple conversion of cellular container vessels to vessels for transporting compressed gas, and with tank sizes within the size of a 40-foot sea container, using existing technologies, containers for transporting gas at a pressure of 250 kg / cm ² are manufactured and pressure up to 300 is considered acceptable. kg / cm ² , which ensures the efficiency of transportation.

Figure 1 shows the main view of the vessel;

In FIG. 2 shows a top view of a ship;

In FIG. 3 shows the cross-section of the ship in the middle of the frame;

In FIG. 4 shows an end view of the stacked containers with containers and a diagram of the loading of compressed gas;

In FIG. 5 shows a side view of the stored containers with containers and a diagram of the ship’s compressed gas reloading system;

In FIG. 6 shows a top view of the stacked containers with containers and a diagram of the ship’s compressed gas reloading system.

A vessel for transporting compressed gas includes a vessel’s hull 1, divided into double cells 2 with vertical guides 3, longitudinal 4 and transverse 5 bulkheads, and also includes containers located between the tiers of containers inside cells 2, double not solid, trusses, or solid water-gas-tight bulkheads 6, the distance between which is 1.8 meters. Double transverse water-tight bulkheads 7 with a gap size of 0.8 meters separate the feed cells 2 from the engine room 8 and the lower tiers of the wheelhouse 9, and double transverse

water-tight bulkheads 10 are located between the cell 11 and the closest cells 2 to the bow of the vessel.

Between the twin bulkheads 6 are collectors 12 for the distribution of compressed gas of the ship’s compressed gas overload system.

Each double cell 2 is closed by a common hatch 13, and is separated from other cells by gas-tight seals 4 and 5.

In the vertical rails 3 are installed and quickly connected interconnected by rotary container stops 14 containers 15, in which containers 16 of cylindrical composite materials with spherical end parts are horizontally located. The containers 15 are placed in the vertical guides 3 of their cell with their ends facing the containers 15 of the other part of the double cell 2, and between them on the bulkhead 6 there is a common collector 12. At each container there are connecting fittings 17, and, when using the described arrangement of containers, in one a plug 18 is installed, and a shutoff valve 19 is attached to the other.

Also, a pressure relief valve 20, a pressure sensor 21, a temperature sensor 22 are installed on the tank 16, as well as a sensor 23 for the presence of condensate, and condensate drain fittings 24 are installed in the lower part of the tanks 16, on which shut-off valves 25 are installed.

Containers 15, in our particular example, by external dimensions and

connecting elements are standard 40-foot sea containers with external dimensions: length 12192 mm, width 2438 mm and height 2591 mm each. Such containers are convenient for further transportation by small-sitting vessels on rivers, as well as by road and rail, but it is possible to use other new sizes

unified containers.

The containers 16 containers 15 are connected through their shutoff valve 19 by a flexible pipe 26 to a manifold 12, which is a vertically arranged pipe 27 with shut-off valves 28. The pipes 27 are interconnected by a jumper 29 with shut-off valves 30. Placing the collector between tiers in the cells reduces pipe lengths and simplify maintenance and management of the gas refueling system. The manifold system 12 also includes a pipe 31 connected through shut-off valves 32 to the pipes of the collector 12, and through a shut-off valve 33 with a compressor and, as a result, a connecting device 44 to the external gas storage. The manifold pipes 12 are connected through shut-off valves 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, to the connecting device 44 to the pipeline of the external gas storage. A shut-off valve 45 and a gas meter 46 are also installed. Also the collector pipe system of each pair of cells 2 is connected to a connecting pipe 47 laid on the upper deck with shut-off valves 48. In each twin cell 2, in the described collector system 12, a compressor 49 is installed, connected to the pipe 31 through the shut-off valve 36, and to the pipe 27 - through a shutoff valve 35 and a safety valve 50.

The compressor 49 is circled with shut-off valves 38, 37, 34, 39, 40, 33, and shut-off valves 36 and 35 at its inlet and outlet.

The connecting device 44 and the compressor 49 are installed in a hermetically sealed in the stowed position and intensively ventilated room 51, installed at the level of the upper deck in the area of the collectors 12, each twin cell 2 along the length of the vessel.

Cells 11 are not connected to a common compressed gas overload system and

They are intended for other gases that are associated with production, such as helium, while methane is the main gas for transportation.

Although, with the existing scheme, it is possible to block and block access to the specified collectors of the selected dual cells 2 and transport several different gases by one vessel.

In each double cell 2, two containers 52 are installed with an empty drainage tank 53, with the possibility of discharge of condensate or excess gas into it from the cargo tanks 16, and the drainage tanks 53 are connected through their safety valves 54 and pipelines to the combustion device 55 are brought to the upper deck gas.

The condensate collection and drainage system includes shut-off valves 25 installed in the lower part of the tanks 16, which are connected through flexible pipelines 56 and shut-off valves 57 to the vertical pipes 58,

connected by jumpers 59 to each other and connected to a separate pump 60.

The presence of hatch covers allows you to use the vessel according to the invention, both in the mode of loading and unloading gas through the ship’s gas reloading system, as well as loading containers with gas-filled containers or unloading filled containers at a container terminal and distributing gas with others by means of transport.

If it is supposed to unload containers only during the repair of the vessel, instead of hatch closures on the superstructure 61, the superstructure deck can be sealed with panels that are installed on the coaming, welded and contain structural elements that are cut off, if necessary, repair and access to any of the cells .

Given that when the gas is received and discharged, its temperature changes, some of the shut-off valves and pipelines for exiting the manifolds 12 are covered

shirts with coolant supply. The system is not shown, as it is known to specialists and is not the subject of the invention.

Rotary container stoppers allow the spreader of the reloader at the container terminal to automatically install or unload the container from the vessel. The containers are fastened with 15 centering cones and screeds more suitable for loading and unloading gas through the ship's system. Loading and unloading of gas is carried out both by gravity and by gas supply by the compressor, depending on the pressure drop.

Gas loading.

Receivers 44 are connected to an external pipe

gas storages in the field, since tanks 16 are empty when the residual pressure is 1 kg / cm ^2, gas under pressure of more than 100 kg / cm ^{2 is} received from the external gas storage through open shut-off valves 41, 38, 37 and 34 by collectors 12 of each cell 2 and from the manifolds 12 through the open shut-off valves 28 and 19, the gas enters the tank 16

containers 15. The shut-off valves 48, 42, 43, 40, 36 and 35, 33, 32 are closed. In the absence of a sufficient number of external pipelines

gas storages, additional shut-off valves 42 and 48 are opened and gas is supplied to another double cell 2 in which the shut-off valve 38 is closed and through the shut-off valve 42 and the gas specified above for the first cell enters the tank 16 (see Fig. 5 which shows a part of the system overload of another double cell 2).

When the gas differential decreases, in the overload system of the cells connected to to the external pipeline by the device 44, the shut-off valves 42, 38 and 37 are closed, and the shut-off valves 39, 40, 36, 35 are opened and the gas is supplied by the compressor 49 and continues to flow until the set pressure in the tanks 16 is reached. When the tanks of this twin cell are full, it turns off compressor 49, the shut-off valves 40, 36 are closed and the shut-off valves 39, 43 are opened and gas flows into the tanks of the double cell on the left, and if it is necessary to supply gas to the right (see Figure 5), the shut-off valve 48 is also opened. cell not connected to Without the device 44 directly to the external gas storage, gas is received with the shut-off valves 43, 40, 36 open, the compressor 49 of this cell and the shut-off valves 35 and 34 and the valves of the manifolds 12 described above, which are similar to those shown in FIG. 5.

The letters A and B indicate the junction with the pipes of the collector 12.

When gas is injected, if necessary, the shut-off valve 45 opens and the gas meter 46 works, but the pressure control allows you to estimate the amount of gas without a meter.

When the pressure is higher than the permissible pressure on the compressor 49, the safety valve 50 is activated.

During transportation, in case of exceeding the maximum permissible pressure in any of the containers 16, the gas is vented to the drain tanks 53, for this

the shut-off valve 19 of the emergency tank and the corresponding shut-off valve 28 on the manifold 12 and a part of the gas by gravity opens

overflows into the drain tanks 53. The safety valve of the drain tanks is configured for a pressure that is 50 kg / cm ² less than the set pressure in the cargo tanks 16. If the pressure in the drain tanks is exceeded, the drain tanks 53 bleed the gas into a gas burning device, and they are always ready to receive gas from cargo tanks with higher pressure than the norm, with a pressure drop of 50 kg / cm ^2. The system also allows gas to be redistributed between containers in case of incomplete loading of the vessel and the emergency state of the tanks in any of the cells. Condensate can be removed from containers using gas pressure in tanks, both before gas intake, and at the beginning of loading or with an additional pump 60.

An inert gas manifold is purged with shut-off valves 32 open.

The diagrams show shut-off valves, as such, for the possibility of explaining the design of the vessel and the scheme of the overload, control and storage system for transporting compressed gas, without specifying the type and drive, but electric and hydraulic and pneumatic remote control of all types of valves are known in the art, which is not described in the application, since it is not the subject of the invention. Specialists, developers of automation and control systems, are able to develop control schemes for remote drives of shut-off valves and compressors through programmable controllers connected to pressure, temperature and switching sensors to perform operations on specified programs.

Claims

Formula

1. A ship for transporting compressed gas, including cargo holds with containers for storing gas during transportation, is equipped with pipelines, alarm sensors, shutoff and connecting fittings, compressors, characterized in that the hull is divided into cells with vertical guides, at least than one bulkhead in which water and gas impermeability, are installed on rails in each other

unified containers with horizontally compressed gas tanks placed in them, which are connected to the ship’s compressed gas reloading system, the hull of the vessel being divided into cells so that a distance of from 0.8 to 2 meters is provided in the area of at least one bounding cell of the bulkhead and in this space there are manifolds for the distribution of compressed gas, pipelines with shut-off valves, a compressor, emergency monitoring and control devices.

2. The vessel according to claim 1, characterized in that, each double cell is closed by a common hatch, water-tight seal and separated

water and gas tight bulkheads from other twin cells.

3. The vessel according to claim 2, characterized in that at least one container with an empty drainage tank is installed in each twin cell, with the possibility of discharge of condensate or excess gas into it in cargo tanks, moreover, the drainage tanks are connected through safety valves and, pipelines brought to the upper deck to a gas burning device.

4. The vessel according to claim 2, characterized in that each tank is connected through a shut-off valve to the manifold by a flexible pipe or via a bellows compensator, and the collector is located between the ends of the containers of the parts of the double cell and connected by a pipe through the shut-off valves and

safety equipment with a compressor and a pipeline from the collector of each double cell is brought out to the upper deck and has connecting fittings with the possibility of connecting an external gas storage to the pipeline and connecting fittings with another double cell.

5. The vessel according to claim 2, characterized in that the compressor connection system provides for a piping with shut-off valves, with the possibility of gas transmission under pressure by gravity.

6. The vessel according to claim 1, characterized in that the containers are interconnected by rotary container stoppers or centering cones and couplers.

7. The ship according to claim 1, characterized in that, in containers horizontally

containers of a cylindrical shape made of composite materials are located, on each of which at least one connecting fitting, a shut-off valve, a safety valve, a pressure and temperature sensor are installed, and a condensate presence sensor and a condensate drain fitting are installed.

8. The vessel according to claim 7, characterized in that, in each tank, the output fitting is made from two ends.

9. The vessel according to claim 1, characterized in that the containers are standard sea 40-foot containers having external dimensions: length 12192 mm, width 2438 mm and height 2591 mm.

10. The ship according to claim 1, characterized in that each cell individually or a group of cells are closed on top with a waterproof hatch.

1 1. The vessel according to claim 1, characterized in that each cell or group of cells is closed on top with removable sewing on the opening in the deck.

12 . The vessel according to claim 1, characterized in that the fittings, shut-off valves and pipelines for exiting the collectors to the connecting fittings are covered by shirts with a coolant.